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Rearrange fields in TF data structures to reduce padding 

This patch rearranges fields of the `image_desc_t` & `auth_img_desc_t`
data structures to reduce padding between the fields and thereby
save memory.

NOTE: Platform ports which anonymously initialize these structures
should be aware of the rearrangement and do the required
modification.

Change-Id: I428b5429632797b31d5bd306174599c07e24c060
This commit is contained in:
Soby Mathew 2016-01-12 10:30:59 +00:00
parent 7b3aabc0cf
commit b313d755a7
2 changed files with 6 additions and 5 deletions
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9
include/common/bl_common.h
View File

@ -202,8 +202,9 @@ typedef struct param_header {
* switching exception levels. The only two mechanisms to do so are
* ERET & SMC. Security state is indicated using bit zero of header
* attribute
* NOTE: BL1 expects entrypoint followed by spsr while processing
* SMC to jump to BL31 from the start of entry_point_info
* NOTE: BL1 expects entrypoint followed by spsr at an offset from the start
* of this structure defined by the macro `ENTRY_POINT_INFO_PC_OFFSET` while
* processing SMC to jump to BL31.
*****************************************************************************/
typedef struct entry_point_info {
param_header_t h;
@ -232,13 +233,13 @@ typedef struct image_info {
typedef struct image_desc {
/* Contains unique image id for the image. */
unsigned int image_id;
image_info_t image_info;
entry_point_info_t ep_info;
/*
* This member contains Image state information.
* Refer IMAGE_STATE_XXX defined above.
*/
unsigned int state;
image_info_t image_info;
entry_point_info_t ep_info;
} image_desc_t;
/*******************************************************************************

2
include/drivers/auth/auth_mod.h
View File

@ -48,8 +48,8 @@
*/
typedef struct auth_img_desc_s {
unsigned int img_id;
const struct auth_img_desc_s *parent;
img_type_t img_type;
const struct auth_img_desc_s *parent;
auth_method_desc_t img_auth_methods[AUTH_METHOD_NUM];
auth_param_desc_t authenticated_data[COT_MAX_VERIFIED_PARAMS];
} auth_img_desc_t;